TITLE: GCN CIRCULAR NUMBER: 27424 SUBJECT: Fermi trigger No 606681997: Global MASTER-Net observations report DATE: 20/03/24 01:45:15 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) MASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 200323A ( Fermi GBM team, GCN 27422) errorbox 17767 sec after trigger time at 2020-03-23 23:42:40 UT, with upper limit up to 18.1 mag. Observations started at twilight. The observations began at zenith distance = 41 deg. The sun altitude is -13.9 deg. The galactic latitude b = 2 deg., longitude l = 284 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1320359 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 88 | 2020-03-23 18:47:55 | MASTER- | (10h 21m 10.74s , -56d 03m 31.5s) | C | 10 | 15.6 | 88 | 2020-03-23 18:47:55 | MASTER- | (10h 07m 59.36s , -56d 04m 27.9s) | C | 10 | 17.5 | 138 | 2020-03-23 18:48:40 | MASTER- | (10h 21m 05.77s , -56d 04m 32.4s) | C | 20 | 15.8 | 138 | 2020-03-23 18:48:40 | MASTER- | (10h 07m 54.08s , -56d 05m 29.4s) | C | 20 | 18.1 | 195 | 2020-03-23 18:49:32 | MASTER- | (10h 21m 11.74s , -56d 04m 28.7s) | C | 30 | 15.9 | 195 | 2020-03-23 18:49:32 | MASTER- | (10h 08m 00.09s , -56d 05m 26.0s) | C | 30 | 18.4 | 263 | 2020-03-23 18:50:35 | MASTER- | (10h 21m 08.53s , -56d 02m 54.1s) | C | 40 | 16.0 | 263 | 2020-03-23 18:50:35 | MASTER- | (10h 07m 57.47s , -56d 03m 51.5s) | C | 40 | 18.5 | 345 | 2020-03-23 18:51:48 | MASTER- | (10h 21m 09.08s , -56d 04m 08.7s) | C | 60 | 16.9 | 345 | 2020-03-23 18:51:48 | MASTER- | (10h 07m 57.63s , -56d 05m 05.7s) | C | 60 | 18.8 | 447 | 2020-03-23 18:53:20 | MASTER- | (10h 21m 12.69s , -56d 02m 42.4s) | C | 80 | 16.1 | 447 | 2020-03-23 18:53:20 | MASTER- | (10h 08m 01.88s , -56d 03m 40.2s) | C | 80 | 18.7 | 569 | 2020-03-23 18:55:12 | MASTER- | (10h 21m 05.66s , -56d 03m 40.5s) | C | 100 | 16.2 | 569 | 2020-03-23 18:55:12 | MASTER- | (10h 07m 54.64s , -56d 04m 38.6s) | C | 100 | 19.0 | 717 | 2020-03-23 18:57:25 | MASTER- | (10h 30m 56.36s , -55d 21m 05.8s) | C | 130 | 15.9 | 717 | 2020-03-23 18:57:25 | MASTER- | (10h 17m 59.63s , -55d 22m 02.5s) | C | 130 | 18.6 | 895 | 2020-03-23 19:00:07 | MASTER- | (10h 31m 04.88s , -55d 22m 08.0s) | C | 160 | 16.0 | 895 | 2020-03-23 19:00:07 | MASTER- | (10h 18m 07.87s , -55d 23m 04.4s) | C | 160 | 18.7 | 1097 | 2020-03-23 19:03:20 | MASTER- | (10h 30m 58.45s , -55d 23m 11.3s) | C | 180 | 16.1 | 1097 | 2020-03-23 19:03:20 | MASTER- | (10h 18m 01.05s , -55d 24m 07.9s) | C | 180 | 18.7 | 1310 | 2020-03-23 19:06:52 | MASTER- | (10h 18m 08.64s , -55d 23m 56.9s) | C | 180 | 18.9 | 1310 | 2020-03-23 19:06:52 | MASTER- | (10h 31m 06.16s , -55d 23m 00.2s) | C | 180 | 16.2 | 1522 | 2020-03-23 19:10:24 | MASTER- | (10h 31m 02.53s , -55d 21m 37.4s) | C | 180 | 16.2 | 1522 | 2020-03-23 19:10:24 | MASTER- | (10h 18m 05.32s , -55d 22m 34.8s) | C | 180 | 18.9 | 1734 | 2020-03-23 19:13:57 | MASTER- | (10h 31m 03.28s , -55d 23m 16.0s) | C | 180 | 16.1 | 1734 | 2020-03-23 19:13:57 | MASTER- | (10h 18m 05.54s , -55d 24m 13.3s) | C | 180 | 18.7 | 1887 | 2020-03-23 19:17:29 | MASTER- | (10h 34m 46.22s , -55d 49m 20.9s) | C | 60 | 15.6 | 1887 | 2020-03-23 19:17:29 | MASTER- | (10h 21m 39.90s , -55d 50m 17.2s) | C | 60 | 18.4 | 1979 | 2020-03-23 19:19:01 | MASTER- | (10h 06m 11.14s , -55d 50m 40.0s) | C | 60 | 16.0 | 3257 | 2020-03-23 19:40:19 | MASTER- | (10h 34m 43.30s , -55d 51m 03.1s) | C | 60 | 17.9 | 3257 | 2020-03-23 19:40:19 | MASTER- | (10h 21m 36.46s , -55d 52m 02.7s) | C | 60 | 18.0 | 3349 | 2020-03-23 19:41:52 | MASTER- | (10h 06m 20.69s , -55d 51m 49.5s) | C | 60 | 17.6 | 3442 | 2020-03-23 19:43:24 | MASTER- | (10h 09m 37.09s , -57d 50m 00.4s) | C | 60 | 17.2 | 3534 | 2020-03-23 19:44:57 | MASTER- | (10h 31m 04.94s , -53d 51m 01.0s) | C | 60 | 16.9 | 3534 | 2020-03-23 19:44:57 | MASTER- | (10h 18m 35.95s , -53d 52m 03.0s) | C | 60 | 17.0 | 3627 | 2020-03-23 19:46:29 | MASTER- | (10h 39m 43.60s , -57d 49m 24.7s) | C | 60 | 16.7 | 3627 | 2020-03-23 19:46:29 | MASTER- | (10h 25m 54.01s , -57d 50m 23.7s) | C | 60 | 16.7 | 3812 | 2020-03-23 19:49:35 | MASTER- | (10h 09m 34.78s , -57d 49m 53.7s) | C | 60 | 15.2 | 3905 | 2020-03-23 19:51:07 | MASTER- | (10h 31m 07.95s , -53d 50m 31.0s) | C | 60 | 15.9 | 3905 | 2020-03-23 19:51:07 | MASTER- | (10h 18m 38.75s , -53d 51m 33.5s) | C | 60 | 15.5 | 3997 | 2020-03-23 19:52:39 | MASTER- | (10h 39m 38.15s , -57d 51m 10.5s) | C | 60 | 15.4 | 3997 | 2020-03-23 19:52:39 | MASTER- | (10h 25m 47.50s , -57d 52m 09.9s) | C | 60 | 15.9 | 17797 | 2020-03-23 23:42:40 | MASTER-OAFA | (10h 21m 36.06s , -55d 52m 31.9s) | C | 60 | 17.3 | 18071 | 2020-03-23 23:47:13 | MASTER-OAFA | (10h 18m 28.11s , -53d 52m 44.4s) | C | 60 | 17.3 | 18162 | 2020-03-23 23:48:44 | MASTER-OAFA | (10h 21m 32.24s , -55d 51m 42.7s) | C | 60 | 17.7 | 18253 | 2020-03-23 23:50:16 | MASTER-OAFA | (10h 35m 54.16s , -55d 52m 36.9s) | C | 60 | 17.4 | 18435 | 2020-03-23 23:53:18 | MASTER-OAFA | (10h 07m 22.16s , -55d 53m 34.4s) | C | 60 | 18.1 | 18617 | 2020-03-23 23:56:20 | MASTER-OAFA | (10h 10m 42.80s , -57d 53m 30.0s) | C | 60 | 17.9 | 18708 | 2020-03-23 23:57:50 | MASTER-OAFA | (10h 18m 34.61s , -53d 52m 09.8s) | C | 60 | 17.4 | 18799 | 2020-03-23 23:59:22 | MASTER-OAFA | (10h 32m 03.67s , -53d 52m 44.0s) | C | 60 | 17.4 | 18890 | 2020-03-24 00:00:53 | MASTER-OAFA | (10h 35m 47.66s , -55d 51m 42.2s) | C | 60 | 17.5 | 18982 | 2020-03-24 00:02:24 | MASTER-OAFA | (10h 07m 20.98s , -55d 52m 58.9s) | C | 60 | 18.1 | 19073 | 2020-03-24 00:03:55 | MASTER-OAFA | (10h 10m 39.03s , -57d 53m 55.4s) | C | 60 | 17.9 | 19164 | 2020-03-24 00:05:27 | MASTER-OAFA | (10h 32m 08.58s , -53d 53m 19.4s) | C | 60 | 17.3 | 19255 | 2020-03-24 00:06:58 | MASTER-OAFA | (10h 25m 46.65s , -57d 53m 33.6s) | C | 60 | 17.5 | 19620 | 2020-03-24 00:13:03 | MASTER-OAFA | (10h 25m 46.27s , -57d 51m 52.2s) | C | 60 | 17.5 | 19711 | 2020-03-24 00:14:34 | MASTER-OAFA | (10h 40m 49.75s , -57d 53m 17.5s) | C | 60 | 17.4 | 20349 | 2020-03-24 00:25:12 | MASTER-OAFA | (10h 40m 49.33s , -57d 51m 40.6s) | C | 60 | 17.4 | 20440 | 2020-03-24 00:26:43 | MASTER-OAFA | (10h 04m 54.88s , -53d 53m 42.3s) | C | 60 | 17.6 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.